Thanks for your help everyone.
I don't like talking about specifics on this board as I'm not sure how my superiors would feel this falls under our 'need to know' policy. But even so, I find your answers invaluable. I'm a relatively new/young engineer so the more people and ideas I can talk...
I am trying to remotely troubleshoot a situation that has come up with a hydraulic raise/lower system.
For safety purposes we require the raise and lower times to be within certain specs (Raise: 5.3-5.5 sec, Lower: 6.0-7.5 sec).
The latest times are too fast in both directions (4.5 raise...
saxon - They claim to have replaced the valve several times... still as you said, it might not be seating properly...
quark - Correct, it isn't installed at the highest point in the loop... Am I right in thinking that shortening the loop so it ends at the highest portion and installing the...
Hello. I have two questions here...
Firstly, we are experiencing a "leak" from a "vacuum breaker" when our pump system is shut off. There is a plumbers loop that goes up from the main return line... then it dips down and has the "vacuum breaker" at the end. When...
I posted before about noise levels through an orifice containing about 150 small holes. Testing has confirmed that the measured dBA are not significantly higher with a single orifice. However the single orifice they used was just scrap and not designed specifically for our application. I need...
I agree with you. But they've been using this plate since 1975! It has to be checked and cleaned out every 3 months... hence we are hopefully moving away from it.
Vanstoja, thanks for that info. The plate thickness is .5 inch, but the diameter of the holes tapers at 22 degrees from the .221 inch smaller diameter. That gives L=.25/(tan 22) so L/d is about 2.8
For the single hole L/d is under 0.2
And I found your post in another thread about the...
Thanks for the links. I had already found a couple of papers.
The pressure drop is approx 70 psi over such an orifice. The clogging is gradual deposits from the salt water (I'm waiting for my co-worker to confirm that for me).
Sara
I am doing research regarding an orifice plate that was originally designed with a single hole but was changed to about 150 small openings. About 5 inches in diameter, It looks like a honey comb and often gets confused with a strainer. The holes in the orifice clog up quite often (even though...
